1. We do not suggest such a behavior out-of-the box. You will need to handle the KeyUp event of RadGridView and implement your own logic.
2.You can find all the TextBoxes under RadGridView with the help of the ChildrenOfType
extension method. Then invoke the Focus() method on a particular TextBox.
3. You can also check our WPF Demos
Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos
and start improving your app based on facts, not hunches.